Update app.py

app.py

@@ -1,3 +1,24 @@
+import streamlit as st
+from dotenv import load_dotenv
+import os
+from htmlTemplate import css, bot_template, user_template
+import PyPDF2
+from langchain.text_splitter import RecursiveCharacterTextSplitter
+from langchain_community.embeddings.spacy_embeddings import SpacyEmbeddings
+from langchain_community.llms import LlamaCpp
+from langchain.embeddings import HuggingFaceEmbeddings 
+from langchain.vectorstores import FAISS
+from langchain.memory import ConversationBufferMemory
+from langchain.chains import ConversationalRetrievalChain
+from langchain.prompts import PromptTemplate
+from sentence_transformers import SentenceTransformer, util
+from langchain_openai import AzureOpenAIEmbeddings
+from langchain_openai import OpenAIEmbeddings
+from langchain_community.embeddings.fastembed import FastEmbedEmbeddings
+from langchain_openai import ChatOpenAI
+
+
+
 def main():
     load_dotenv()